Wrench.



UNITED STATES Patented June 6, 1905.

HERMAN A. PAQUETTE, OF FAIRMOUNTHEIGHTS, MARYLAND.

WRENCH.

SPECIFICATION forming part of Ii'etters ,Patent No. 791,644, dated J une6, 1905.

. Application filed 0ctoberr13`, 1904. Serial No. 228,254. l

To all whom, t may concern/1,:4 A

Beit known that I, HEnMAN A. PAQUETTE, a citizen of the United States,residing at Fairmount Heights, in the county of Prince George and Stateof Maryland, have invented new and usefulzImprovements in /Vrenches, ofwhichl the following isl a specification.

` My invention relates to wrenches of thead` justable class; and itsobject isto provide a wrench which will combine stability and strengthand simplicity with perfect and instantaneous adjustability.

Another object of my invention isto provide a wrench which may be easilyand rapidly adjusted to nuts of different sizes and conformationwithoutI the necessity of manip- -ulatlng screws or employing othercumbersome means rendering the adjustment of the wrench awkward anddiflicult.

A further object of my invention is to provide a device of the characterabout to be described which may be accurately adjusted to 'the contourof anynut and readily operated with one hand upon any number of. nuts ofVarious sizes in succession within the limits of llts dimensions.

for purposes of cleaning or for replacement ,of those .parts which mayhave becomeworn -byconstant usage.

A further' and greatl advantage of this 'wrench resides in the rigidityof the movable jaw, which is materially increased when in its adjustedposition by the exertion of great I force upon the wrench for tighteningnuts.

With. these and other objects in view my invention consists in thefeatures, details of construction, and combination of parts hereinafter.more specifically referred to and described,

las are illustrated in the accompanying draw-4 -lngsVforming partof-th1sspeclfication, 1n

which@ the` shoulder .and shank or rack-bar 1.

Like characters of reference denote'like. parts wherever they occurthroughout the various viewsof the drawings. A

Referring to the drawings, 1 is a shankor rack-bar havlng fixedlymounted thereon a jaw 2 and preferably made integral with one 'end ofsaid shank or rack-bar fora more thorough coperationy with the movablejaw 3. This movable jaw comprisesv a frame having parallel arms 4 and 5and a connecting-strip 6,*the jaw and connecting-strips beingprovidedwith klongitudinal apertures 7 of .the

size and rectangular shape and for the reception of the said shank orrack-bar 1. In order to permit of an oscillatory movement of thediameter of the upper aperture in said movablev jaw, while stillpreserving its rectangular conformation,\isincreased, this provisionenabling the movable jaw to be rocked into and out of engagement'withthe shank or rack-bar 1 and admitting of the vertical movementof saidjaw along the shank or rack-.bar

Vin-order to adapt the distance between the -movableand the stationaryjaw to the nut to The inner .wall` l be adjusted to the wrench. of saidaperture vis provided with teeth milled Asaid slidable jaw upon theshank or rack-bar, A

to tightly and firmly engage with the shank or rack-bar 1.

Upon the arm 5 of the movable jaw is a shoulder 8,'cast or otherwiseformed, inclining toward the shank or rack-bar, said shoul- 4der servingto receive a wedge or other suitable meansfor firmly clamping themovable jaw in its adjusted position. In the present instance thiswedging means consists of a roller 9, Figs. 2 and 4, rotatively mountedwithin a {ianged yoke 10, Fig. 1, and operable between rlhe der.

into the yoke and is there securely fastened in any suitable manner,preferably, however, for facilitating the removal of the separate partsby a nut 12, screwed to the extremity of the shank ofr said rod, saidnut snugly litting the space formed by the walls of the yoke.Intermediate.y the yoke and connecting-strip is a spring 13, bearingagainst the yoke and strip and adapted to automatically lock saidaforementioned movable jaw in its position of adjustment. On the end ofthe rod is a thumbpiece 14, having a recess which conforms to the shapeof the shank or rack-bar, along which it intended to travel, and by theinsertion of the thumb or other member between the movable jaw andthumb-piece it will be silient spring 16 is placed between the shank andthe walls of the movable jaw, the tend- Iency of this spring being toforce i said movable jaw away from the rack and normally holditdisengaged from the rack while the movable 4jawis in its upward anddownward travel.

In Figs.2 and 4 the means operating to secure the movable jaw to therack-bar consists of a roller traveling along an inclined shoul- It isto be understood that a wedge or any other means for accomplishing thispurpose falls within the scope of this invention. In Fig. 3 a wedge 15is shown operating to perform the same function as that .of the roller,and while this invention is not restrict- Ved to the use of a roller orwedge the views embodying these means have been represented to show themost advantageous manner of construction of my invention.

From the above specification and construcable jaw maybe operated ineither direction necessary to adjust the wrench to any size of gnuts.

What I claim, and desire to secure by Let- .ters Patent of the UnitedStates, is-

1. In a wrench, the combination, with a stationary Jaw and a rack-bar,of a movable jaw on said rack-bar, said movable jaw comprisi'ng a frameprovided with openings through vwhich extends the. rack-bar, and havingadjaycent sald rack-bar an inclined face, a springpressed rod slidablewithin said frame, a yoke carrying a roller adaptedto travel along the'incline and fastened to the rod, and a thumbpiece for operating therod.

2'. In a wrench, the combination, with a stationary Jaw and a rack-bar,of a movable jaw on said rack-bar, said movable jaw comprising a frameprovided with openings through which extends the rack-bar, and havingadja-l cent said rack-bar an inclined face, a spring between the wallsof the movable jaw and rack-bar for normally holding the movable jawdisengaged from the rack-bar in its upward and downward travel, aspring-pressed rod slidable within said frame, a yoke carrying a rolleradapted to travel along the incline and fastened to the said rod, and athumbpiece for operating the rod.

3. A wrench havinga fixed jaw and ashank,

la rocking jaw cooperating therewith having `way'and the shank andcarrying a roller, a

spring coiled around -said operating-rod to normally hold the rolleragainst the inclined way and shank for locking the movable jaw againstsaid shank, substantially as described.

5. In a wrench, the combination withasta- -tionary jaw and a toothedshank, of a rocking movable jaw having an inclined way and teeth forengaging the teeth of the shank, a roller mounted between the shank andinclined way, said roller having end flanges fitting each side of theshank, a spring to normally hold the roller against the inclined way andshank for locking the movable jaw against said shank, and a spring fornormally holding said teeth out of engagement with the shank,substantially as described.

6. A wrench comprising a stationary jaw, a shank, a movable jaw mountedon the shank and having an extension spaced from the shank and inclinedon its face adjacent the shank, a roller mounted between the shank andthe extension, iianges on said roller bearing on each side of the shank,a shaft extending from the roller and mounted in an aperture in theextension,y a spring interposed between the roller and the extension,said spring normally forcing the intermediate part of the roller intoengagement with the incline and the shank for locking the movable jawagainst the shank, substantially as described.

7; A wrench comprising a stationary jaw, a shank having teeth on oneedge, a movable jaw mounted on the shank and having teeth formed on theinside thereof and an extension spaced from the shank and inclined onIOO IIO

its faceadjaeent the shank, a roller mountedl between the shank and theextension, flanges on said roller bearing on each side of said shank, ashaft extending from the roller and mounted in an aperture in theextension, a

spring interposed between the roller and the Y extension and normallyforcing the intermediate part of the roller into engagement with theincline and the shank and causing the HERMAN A. PAQUETTE.

Witnesses:

CHAs. L. GWINN, JNO. J. MEAGLEY.

